When his son William died in 1862 Lincoln resumed his duties - but mechanically & with a heavy heart. Every anniversary of the lad's death, he observed as a day of mourning.
One day the rector of Trinity Church, New York, at the solicitation of Lincoln's friends, called on him & told him that the continued indulgence of such feelings, though natural, was sinful & unworthy of one who believed in the Christian faith & that he was unfitting himself for his duties as the leader of his people.
From that day Lincoln ceased his mourning, at least that outward mourning at stated seasons which interfered with his own happiness & usefulness.
1 Thes 4:13 (NIRV): “Brothers and sisters, we want you to know what happens to those who die. We don’t want you to mourn, as other people do. They mourn because they don’t have any hope.”
“I believe the holier a man becomes, the more he mourns over the ungodliness which remains in him.” - Charles Spurgeon.